XM 9 20 MSI T MEGA Transom Mount TransducerMEGA SI, MEGA DI, DualBeam PLUS, 20/60/86/55 degrees, 200/83/455/800 kHz and 1.2 MHz, temperature built-in. For HELIX MEGA Side Imaging units only. WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications: Temperature: Yes Speed Included: No Pins: 7 Mounting Style: Transom Imagining: Standard/Down/Side Box Dimensions: 7"H x 8"W x 10"L WT: 2.8 lbs UPC: 082324050275 Owner&';s Manual (pdf)